The mesopores in coke are relatively large
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The coke picked up from the drying platform appears to be in good condition, with small pores and a low porosity rate. However, when the coke is tapped, its internal pores are larger and the porosity rate is higher, with obvious stratification. What is the reason? Coke is pushed out over time, and there is no uncooked coke visible in the coke cakes.
Could you elaborate? What aspects of coal are checked? Thank you
The internal pores are large; what is the reactivity like?
There is a case where the fineness of the coal crushing is not appropriate
The last edit to this post was made by dmz329227 on 2016-5-13 at 17:50. In my opinion, it’s necessary to first check the crushing particle size of the gas-rich coal; perhaps the mixture of coal powders is not uniform, with a relatively higher proportion of gas-rich and nutrient-rich coal inside the coke blocks. When these blocks become stress centers during coking, this phenomenon occurs
Poor reactivity, 29 to 30, sometimes even worse
The fineness of the blending coal is around 88%. Check the crushing particle size of gas-fertilizer coal? How to check? Is it being too fine that causes this phenomenon, or too thick? Thank you